1–20 of 483 hits
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    Lift car structure for elevator

    Free access
    LI ZHENG | European Patent Office | 2023

    Elevator car self-locking device convenient to maintain

    Free access
    LI ZHENG | European Patent Office | 2021

    Elevator counterweight frame assembling structure

    Free access
    LI ZHENG | European Patent Office | 2021

    Conveniently maintained communication pole

    Free access
    LI ZHENG | European Patent Office | 2021

    Elevator counterweight frame structure

    Free access
    LI ZHENG | European Patent Office | 2023

    High-precision safety elevator guide rail

    Free access
    LI ZHENG | European Patent Office | 2021

    Anti-falling elevator car structure

    Free access
    LI ZHENG | European Patent Office | 2021

    Elevator corner anti-collision protection shell

    Free access
    LI ZHENG | European Patent Office | 2023

    Elevator straight beam bending-resistant reinforcing structure

    Free access
    LI ZHENG | European Patent Office | 2023

    Automobile air conditioner control circuit

    Free access
    LI ZHENG | European Patent Office | 2021

    Elevator outer frame stall protection device

    Free access
    LI ZHENG | European Patent Office | 2021

    Device for preventing elevator car from accidentally moving

    Free access
    LI ZHENG | European Patent Office | 2021

    Efficient ship self-generating device utilizing ocean energy

    Free access
    LI ZHENG | European Patent Office | 2021

    B-type recreational vehicle refitted from minibus

    Free access
    LI ZHENG | European Patent Office | 2020

    Intelligent unmanned aerial vehicle with heat dissipation function

    Free access
    LI ZHENG | European Patent Office | 2021

    Switch and automobile

    Free access
    LI ZHENG | European Patent Office | 2020

    PIR SENSOR AND PHOTOGRAPHING DEVICE

    Free access
    LI ZHENG | European Patent Office | 2019